One vertex per element, one color per generator, with an edge from x to x·s.
(2,6)(7,8)(9,10)(11,13)(12,14)(15,16)(17,18,21,23)(19,25,26,32)(20,28,29,24)(22,30,31,27)(1,2,5,6)(3,8,4,7)(9,10)(11,15)(12,14)(13,16)(19,26)(22,31)(25,32)(27,30)(9,11)(10,13)(12,16)(14,15)(17,19,20,27,21,26,29,30)(18,22,24,25,23,31,28,32)(1,3,5,4)(2,7,6,8)(11,16)(13,15)(19,26)(22,31)(25,32)(27,30)(1,4,5,3)(2,7,6,8)(10,14)(13,15)(18,23)(19,26)(24,28)(27,30)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.